Millions overuse caffeine which can cause symptoms such as nervousness and anxiety, hyperreflexia, and sleeplessness. In large doses or long-term exposure, respiratory problems and even heart palpitations can occur. And that's just for starters.

In Argentina and neighboring regions the historical caffeinated drink, yerba mate has a number of unique historical and social settings. Early Spanish explorers and settlers learned about the stimulatory effects of yerba mate from the native Americans living in that region.